Pencil sharpener



FIG. 1 is a perspective view of the pencil sharpener;

FIG. 2 is a perspective view thereof from the opposite side;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line in FIGS. 1 and 3 is included to show a feature that forms no part of the claimed design. 

CLAIM The ornamental design for a pencil sharpener, as shown and described. 